Our custom backend already powers the website and POS. I now need the accounting layer added so day-to-day numbers flow straight from sales to books without manual transfer. Core features I want live in this first phase: • Expense tracking that pulls cost data directly from existing records. • Financial reporting dashboards for P&L, balance sheet and cash-flow snapshots. • A complete general ledger with accounts payable, accounts receivable and automated bank-reconciliation tools. Everything must post correctly to trial-balance level so that I can export tidy figures for my accountant. The code you deliver should: 1. Slot into the current Laravel-based API (MySQL) with minimal refactor. 2. Re-use our POS transaction data; don’t break current endpoints. 3. Include clear migration scripts, seed data for testing and concise setup notes. 4. Arrive unit-tested so I can validate GL entries, AP/AR aging and reconciliation logic. I’m looking for someone who has built or heavily customised an accounting module before—please share a brief example or repo link when you respond.